Window lock means



Aug. 21, 1962 J. BREEZE WINDOW LOCK MEANS Filed March 9, 1960 FIG 5 FIG 4 INVENTOR.

JAMES BREEZE gmrzww 3,05%,323 WINDGW LQCK BEANS I James Breeze, 331 Richards Ave., Hieksville, N.Y. Filed Mar. 9, 1%0, Ser. No. 13,380 3 Claims. (Cl. 292-455) This invention relates to window lock means and more particularly to pressure locks for double sash windows which are adapted to lock both sashes in any open or closed position.

Conventional double hung windows can be locked only when in fully closed position as they are generally provided with a cam lock which is mounted on the top of the inside sash which cooperates with a catch on the lower part of the outside sash.

Therefore, conventional windows cannot be locked in open position and when the windows are left partially open, for instance, for ventilation, they can be easily opened from the outside by burglars.

The present invention provides a pressure lock which is arranged to lock both sashes in any desired position with one sash or both sashes open or both fully closed.

The present invention generally comprises a slidable member which is mounted in a cut-out portion of the window channel or channels. A mounting plate is secured to the window frame and has a threaded bushing. A screw type handle is mounted in the bushing, the shaft of the handle bearing against the slidable member to apply pressure to the sashes.

In another embodiment of the invention an adjustable spring is incorporated to apply a constant pressure to the sashes which is sufiicient to hold them against their own weight but still permit finger-tip movement. This spring arrangement eliminates the necessity for counter-Weights for the sashes. Instead of a handle a screw type connection may be made or the handle and shaft may be removable so that the handle acts as a key. This arrangement would prevent someone from reaching in from the outside where the window is partially open for the purpose of operating the lock.

Accordingly, a principal object of the invention is to provide new and improved window lock means.

Another object of the invention is to provide new and improved pressure type locking means for windows.

Another object of the invention is to provide spring loaded placement means for holding window sashes.

Another object of the invention is to provide adjustable spring loaded placement means for holding window sashes.

Another object of the invention is to provide means for preventing rattling of the windows.

Another object of the invention is to provide window lock means for single or double hung windows which are adapted to lock the sashes in any open or closed position.

Another object of the invention is to provide pressure type window locking means having a removable key feature.

These and other objects of the invention will be apparent from the following specification and drawings, of which:

FIG. 1 is a perspective view of a typical window frame having channels.

FIG. 2 is an elevation View partly in section of an embodiment of the invention.

FIG. 3 is a sectional view taken along the lines 33 of FIG. 2.

FIG. 4 is a detail view of a modified sliding lock member.

FIG. 5 is an elevation view of another embodiment of the invention.

Referring to the figures, FIG. 1 shows a typical chan- .a tr

nel arrangement for double hung windows comprising a first channel 1 for an outside sash and a second channel 2 for an inside sash. These channels are formed by channel members 5 and 6 which are generally made of aluminum or other suitable material either in one piece or in several pieces and are suitably mounted to the side 3 of the window frame. There would be corresponding channels on the other side and also preferably at the top of the window frame.

The pressure lock of the present invention comprises a slidable member 4 which may be shaped like the channel members 5 and 6. A portion 7 of the channel member 5 is cut out to accommodate the sliding member. As a matter of fact the sliding member 4 may be the cut out piece, except that an additional portion 3 of the channel 1 must be removed to accommodate necessary movement of the sliding member 4.

Therefore, the slidable member 4 is adapted to move across the axis of the channels so that the portion 4a will apply pressure to the insidesash and the portion 4b will apply pressure to the outside sash, the slidable member being mounted at the center of the window so as to come in contact with both sashes.

Pressure is applied to the sliding member by means of a mounting plate 19 which may be mounted on either the channel member 6 or the window frame 3. The plate 10 has an internally threaded mounting stud 11 which accommodates a threaded shaft 12 upon which is mounted a handle 13. The shaft l2 bears against the slidable memher 4 so that when the handle is screwed into the mounting stud l1 pressure is applied which causes the sliding members 4 to slide across the channels and into pressure contact with the sashes. The handle may be removable for security purposes.

FIG. 2 shows a side view showing the upper sash 20 mounted in the channel 1 and the lower sash 21 mounted in the channel 2. The mounting plate 19 is secured to the channel member 6 or alternatively .to the side frame by means of screws and the shaft 12 and handle 13 are mounted so as to move the slidable member 4 so that it will apply pressure to both sashes and wedge the sashes against the channel members on their outer side.

FIG. 3 shows a sectional view of the embodiment of FIG. 2 taken along the lines 33 of FIG. 2.

FIG. 4 shows a modification 4' of the sliding member. In this arrangement the outside bottom of the extension piece 24. is removed. The actuating shaft is adapted to contact the slidable member 4', [for instance at the point 25, so that the portion 26 would bear against the top of the inside sash and the portion 24 would bear against the outside sash. The member 24 is cut away so that the movable member may not be reached from the outside with a screw driver or jimmy, even when the outside sash is in its full upper position. A slot 29 may be provided to mount the sliding member 4- to the window frame by means of a pin or screw 28 mounted flush with the surface of the sliding member. This slot would not be necessary in all cases but may be desirable, for instance in a case where there is no metal channel to support the sliding member.

FIG. 5 shows another embodiment of the invention which provides an adjustable spring holding pressure in addition to the locking pressure. In this embodiment the mounting plate 39 has a fixedly attached stud 31 with internal and external threads and nut 32 thereon to adjustably accommodate a spring 33. The threads on the shaft 12 only engage the internal threads of stud 31. The spring 33 fits loosely on the shaft 12 and bears against the movable member 4 so as to apply any desired holding pressure on the sashes. This pressure may be adjusted to permit easy placement or movement of the sashes while at the same time preventing the sashes from rattling and eliminating the need for counter-weights or other holding devices.

The lock of FIG. 5 may also be rendered burglar proof by using a removable handle. This arrangement would prevent the window from being opened from the outside or at least cause such a delay that would effectively defeat any burglary attempts.

The present locking device has been shown and illustrated with windows of the type having metal channels. However, it may be easily used with windows which are merely held in place by wooden mouldings by making a slight cut in the Window frame and moulding sufficient to accommodate the sliding member. The mounting plate may be securely mounted to the window frame in a variety of methods and special mounting holes or brackets may be easily devised by those desiring .to practice the invention without departing from the scope thereof.

The end of shaft 12 preferably fits into a locating socket on the movable member 4 to minimize jamming or binding.

Various modifications may be made in the spring arrangement, for instance .the adjustable feature may be eliminated by removing the nut 32 and choosing the spring 33 so as to apply constant pressure to the member 4 at all times. The strength of the spring may be chosen as desired.

The present invention is applicable to both double and single sashes which slide vertically, horizontally or any other angle.

The present device may be mounted on either side of the window.

The end of shaft may be rotatably attached to the slidable member 4 for retracting member 4. This modification would be useful in cases where the sash has a series of cutouts or placement teeth which may be engaged by the slidable member.

I claim:

1. Window lock means for sashes mounted in channels in a window frame comprising a short channel like member having two parallel sides adapted to fit over an edge of one of said sashes, said member being slidable in a cut out portion of said channels for motion perpendicular to the axis ofsaid channels, a mounting plate fixedly mounted with respect to one of said channels adjacent said slidably mounted member, a tapped shaftway in said plate, the axis of said shaftway being parallel the slide motion axis of said member, a threaded shaft movably mounted in said tapped shaftway, the end of said shaft being adapted to bear againstsaid member, to cause each of said parallel sides of said member to bear against one of said sashes.

2. Window lock means for sashes mounted in channels in a window frame comprising a short channel like member having two parallel sides adapted to fit over an edge of one of said sashes, said member being slidable in a cut out portion of said channels for motion perpendicular to the axis of said channels, a mounting plate fixedly mounted with respect to one of said channels adjacent said slidably mounted member, a tapped shaftway in said plate, the axis of said shaftway being parallel the slide motion axis of said member, a threaded shaft in said tapped shaftway, the end of said shaft being adapted to bear against said member, a spring loosely mounted on said shaft between said slidable member and said mounting plate member.

3. Window lock means for sashes mounted in channels in a window frame comprising a short channel like member having two parallel sides adapted to fit over an edge of one of said sashes, said member being slidable in a cut out portion of said channels for motion perpendicular to the axis of said channels, a mounting plate fixedly mounted with respect to one of said channels adjacent said slidably mounted member, a tapped shaftway in said plate, the axis of said shaftway being parallel the slide motion axis of said member, a threaded shaft in said tapped shaftway, the end of said shaft being adapted to bear against said member, a spring loosely mounted on said shaft between said slidable member and said mounting plate member and means to adjust the pressure of said spring.

References Cited in the file of this patent UNITED STATES PATENTS 178,378 Payson June 6, 1876 517,226 Little Mar. 27, 1894 1,354,625 Segal Oct. 5, 1920 1,837,604 Wizek Dec. 22, 1931 2,219,338 Segal Oct. 29, 1940 

